diff options
Diffstat (limited to 'unix/tclLoadOSF.c')
| -rw-r--r-- | unix/tclLoadOSF.c | 170 |
1 files changed, 70 insertions, 100 deletions
diff --git a/unix/tclLoadOSF.c b/unix/tclLoadOSF.c index fbd4d5f..cee8c23 100644 --- a/unix/tclLoadOSF.c +++ b/unix/tclLoadOSF.c @@ -1,10 +1,10 @@ -/* +/* * tclLoadOSF.c -- * - * This function provides a version of the TclLoadFile that works under - * OSF/1 1.0/1.1/1.2 and related systems, utilizing the old OSF/1 - * /sbin/loader and /usr/include/loader.h. OSF/1 versions from 1.3 and on - * use ELF, rtld, and dlopen()[/usr/include/ldfcn.h]. + * This procedure provides a version of the TclLoadFile that works + * under OSF/1 1.0/1.1/1.2 and related systems, utilizing the old OSF/1 + * /sbin/loader and /usr/include/loader.h. OSF/1 versions from 1.3 and + * on use ELF, rtld, and dlopen()[/usr/include/ldfcn.h]. * * This is useful for: * OSF/1 1.0, 1.1, 1.2 (from OSF) @@ -13,46 +13,40 @@ * HP OSF/1 1.0 ("Acorn") using COFF * * This is likely to be useful for: - * Paragon OSF/1 (from Intel) - * HI-OSF/1 (from Hitachi) + * Paragon OSF/1 (from Intel) + * HI-OSF/1 (from Hitachi) * * This is NOT to be used on: * Digitial Alpha OSF/1 systems * OSF/1 1.3 or later (from OSF) using ELF * includes: MK6, MK7, AD2, AD3 (from OSF RI) * - * This approach to things was utter @&^#; thankfully, OSF/1 eventually - * supported dlopen(). + * This approach to things was utter @&^#; thankfully, + * OSF/1 eventually supported dlopen(). * * John Robert LoVerso <loverso@freebsd.osf.org> * * Copyright (c) 1995-1997 Sun Microsystems, Inc. * - * See the file "license.terms" for information on usage and redistribution of - * this file, and for a DISCLAIMER OF ALL WARRANTIES. + * See the file "license.terms" for information on usage and redistribution + * of this file, and for a DISCLAIMER OF ALL WARRANTIES. */ #include "tclInt.h" #include <sys/types.h> #include <loader.h> -/* Static functions defined within this file */ - -static void* FindSymbol(Tcl_Interp* interp, Tcl_LoadHandle loadHandle, - const char* symbol); -static void UnloadFile(Tcl_LoadHandle handle); - /* *---------------------------------------------------------------------- * * TclpDlopen -- * - * Dynamically loads a binary code file into memory and returns a handle - * to the new code. + * Dynamically loads a binary code file into memory and returns + * a handle to the new code. * * Results: - * A standard Tcl completion code. If an error occurs, an error message - * is left in the interp's result. + * A standard Tcl completion code. If an error occurs, an error + * message is left in the interp's result. * * Side effects: * New code suddenly appears in memory. @@ -61,117 +55,101 @@ static void UnloadFile(Tcl_LoadHandle handle); */ int -TclpDlopen( - Tcl_Interp *interp, /* Used for error reporting. */ - Tcl_Obj *pathPtr, /* Name of the file containing the desired +TclpDlopen(interp, pathPtr, loadHandle, unloadProcPtr) + Tcl_Interp *interp; /* Used for error reporting. */ + Tcl_Obj *pathPtr; /* Name of the file containing the desired * code (UTF-8). */ - Tcl_LoadHandle *loadHandle, /* Filled with token for dynamically loaded - * file which will be passed back to + Tcl_LoadHandle *loadHandle; /* Filled with token for dynamically loaded + * file which will be passed back to * (*unloadProcPtr)() to unload the file. */ - Tcl_FSUnloadFileProc **unloadProcPtr) + Tcl_FSUnloadFileProc **unloadProcPtr; /* Filled with address of Tcl_FSUnloadFileProc - * function which should be used for this - * file. */ + * function which should be used for + * this file. */ { - Tcl_LoadHandle newHandle; ldr_module_t lm; char *pkg; char *fileName = Tcl_GetString(pathPtr); - const char *native; + CONST char *native; - /* + /* * First try the full path the user gave us. This is particularly - * important if the cwd is inside a vfs, and we are trying to load using a - * relative path. + * important if the cwd is inside a vfs, and we are trying to load + * using a relative path. */ - native = Tcl_FSGetNativePath(pathPtr); lm = (Tcl_PackageInitProc *) load(native, LDR_NOFLAGS); if (lm == LDR_NULL_MODULE) { - /* - * Let the OS loader examine the binary search path for whatever - * string the user gave us which hopefully refers to a file on the - * binary path + /* + * Let the OS loader examine the binary search path for + * whatever string the user gave us which hopefully refers + * to a file on the binary path */ - Tcl_DString ds; - native = Tcl_UtfToExternalDString(NULL, fileName, -1, &ds); lm = (Tcl_PackageInitProc *) load(native, LDR_NOFLAGS); Tcl_DStringFree(&ds); } - + if (lm == LDR_NULL_MODULE) { - Tcl_AppendResult(interp, "couldn't load file \"", fileName, "\": ", - Tcl_PosixError(interp), NULL); + Tcl_AppendResult(interp, "couldn't load file \"", fileName, + "\": ", Tcl_PosixError (interp), (char *) NULL); return TCL_ERROR; } *clientDataPtr = NULL; - + /* * My convention is to use a [OSF loader] package name the same as shlib, * since the idiots never implemented ldr_lookup() and it is otherwise * impossible to get a package name given a module. * - * I build loadable modules with a makefile rule like + * I build loadable modules with a makefile rule like * ld ... -export $@: -o $@ $(OBJS) */ - if ((pkg = strrchr(fileName, '/')) == NULL) { pkg = fileName; } else { pkg++; } - newHandle = ckalloc(sizeof(*newHandle)); - newHandle->clientData = pkg; - newHandle->findSymbolProcPtr = &FindSymbol; - newHandle->unloadFileProcPtr = &UnloadFile; - *loadHandle = newHandle; - *unloadProcPtr = &UnloadFile; + *loadHandle = pkg; + *unloadProcPtr = &TclpUnloadFile; return TCL_OK; } /* *---------------------------------------------------------------------- * - * FindSymbol -- + * TclpFindSymbol -- * - * Looks up a symbol, by name, through a handle associated with a - * previously loaded piece of code (shared library). + * Looks up a symbol, by name, through a handle associated with + * a previously loaded piece of code (shared library). * * Results: - * Returns a pointer to the function associated with 'symbol' if it is - * found. Otherwise returns NULL and may leave an error message in the - * interp's result. + * Returns a pointer to the function associated with 'symbol' if + * it is found. Otherwise returns NULL and may leave an error + * message in the interp's result. * *---------------------------------------------------------------------- */ - -static void * -FindSymbol( - Tcl_Interp *interp, - Tcl_LoadHandle loadHandle, - const char *symbol) +Tcl_PackageInitProc* +TclpFindSymbol(interp, loadHandle, symbol) + Tcl_Interp *interp; + Tcl_LoadHandle loadHandle; + CONST char *symbol; { - void* retval = ldr_lookup_package((char *)loadHandle, symbol); - if (retval == NULL && interp != NULL) { - Tcl_ResetResult(interp); - Tcl_AppendResult(interp, "cannot find symbol\"", symbol, "\"", NULL); - Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "LOAD_SYMBOL", symbol, NULL); - } - return retval; + return ldr_lookup_package((char *)loadHandle, symbol); } /* *---------------------------------------------------------------------- * - * UnloadFile -- + * TclpUnloadFile -- * - * Unloads a dynamically loaded binary code file from memory. Code - * pointers in the formerly loaded file are no longer valid after calling - * this function. + * Unloads a dynamically loaded binary code file from memory. + * Code pointers in the formerly loaded file are no longer valid + * after calling this function. * * Results: * None. @@ -182,13 +160,13 @@ FindSymbol( *---------------------------------------------------------------------- */ -static void -UnloadFile( - Tcl_LoadHandle loadHandle) /* loadHandle returned by a previous call to - * TclpDlopen(). The loadHandle is a token - * that represents the loaded file. */ +void +TclpUnloadFile(loadHandle) + Tcl_LoadHandle loadHandle; /* loadHandle returned by a previous call + * to TclpDlopen(). The loadHandle is + * a token that represents the loaded + * file. */ { - ckfree(loadHandle); } /* @@ -196,14 +174,14 @@ UnloadFile( * * TclGuessPackageName -- * - * If the "load" command is invoked without providing a package name, - * this function is invoked to try to figure it out. + * If the "load" command is invoked without providing a package + * name, this procedure is invoked to try to figure it out. * * Results: - * Always returns 0 to indicate that we couldn't figure out a package - * name; generic code will then try to guess the package from the file - * name. A return value of 1 would have meant that we figured out the - * package name and put it in bufPtr. + * Always returns 0 to indicate that we couldn't figure out a + * package name; generic code will then try to guess the package + * from the file name. A return value of 1 would have meant that + * we figured out the package name and put it in bufPtr. * * Side effects: * None. @@ -212,19 +190,11 @@ UnloadFile( */ int -TclGuessPackageName( - const char *fileName, /* Name of file containing package (already +TclGuessPackageName(fileName, bufPtr) + CONST char *fileName; /* Name of file containing package (already * translated to local form if needed). */ - Tcl_DString *bufPtr) /* Initialized empty dstring. Append package - * name to this if possible. */ + Tcl_DString *bufPtr; /* Initialized empty dstring. Append + * package name to this if possible. */ { return 0; } - -/* - * Local Variables: - * mode: c - * c-basic-offset: 4 - * fill-column: 78 - * End: - */ |